<!DOCTYPE html>
<html>
<head>
	<title></title>
</head>
<body>

<script type="text/javascript">

var arr1 = ['a','b','c','d','e'];
var arr2 = arr1.slice(1);
console.log( arr2 ,arr1 );


var arr3 = ['a','b','c','d','e'];
var arr4 = arr3.splice(1,1,'你好');
console.log( arr4  ,arr3);




</script>
</body>
</html>